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From "Andrew Mashenkov (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (IGNITE-3959) SQL: Optimize Date\Time fields conversion.
Date Wed, 05 Oct 2016 11:09:20 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-3959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Mashenkov updated IGNITE-3959:
-------------------------------------
    Comment: was deleted

(was: Also i've noticed, that when we use aggregate sql function with timestamps, H2 needs
to unwrap ValueTimestamp objects using java.util.Calendar to pass them as arguments.)

> SQL: Optimize Date\Time fields conversion.
> ------------------------------------------
>
>                 Key: IGNITE-3959
>                 URL: https://issues.apache.org/jira/browse/IGNITE-3959
>             Project: Ignite
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 1.6, 1.7
>            Reporter: Andrew Mashenkov
>              Labels: performance
>
> SqlFieldsQueries slowdown on date\time fields processing due to ineffective java.util.Calendar
usage for date manipulation by H2 database.
> Good point to start is IgniteH2Indexing.wrap() method. Make optimization for types DATE
and TIME as it already done for TIMESTAMP type.



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